diff options
| author |   Juraj Linkeš <juraj.linkes@pantheon.tech> | 2021-10-12 10:03:04 +0200 |
|---|---|---|
| committer | Juraj Linke? <juraj.linkes@pantheon.tech> | 2021-11-08 10:38:43 +0000 |
| commit | 3cba9eaf8dce261928939aa112fae4354b51e229 (patch) | |
| tree | 03f1748116e22cc172f3a523d18f4b180fef4e54 /resources/libraries/robot/shared/interfaces.robot | |
| parent | 03e0de0418452c9904dafe74d86e36cf3c2a7289 (diff) | |
vpp_device: bind to vfio-pci before running tests
In rare cases, binding the whole /dev/vfio folder will result in
unusable VFs:
notice dpdk EAL: Cannot open /dev/vfio/151: Device or resource busy
[0], section 4.3.1. provides some clues as to what's going on and how to
avoid the failure. Mounting /dev/vfio reset the file descriptors of all
devices under /dev/vfio. Vfio-pci creates a device when an interface is
bound to it. The rare failure then occurs when /dev/vfio is mounted
while a process is using the file descriptors result in that process
using invalid file descriptors (or file descriptors belonging to a
different VF).
Fix the issue by binding i40e and ice VFs to vfio-pci before containers
are created and make sure that the VFs are not unbound later in testing.
Only bind DUT VFs since the TG uses the kernel driver.
[0]: https://connect.redhat.com/sites/default/files/2021-03/Cloud Native Network Function Requirements.pdf
Ticket: CSIT-1794
Change-Id: I83db91b29d16669fb034b141ad247f6f796fdf64
Signed-off-by: Juraj Linkeš <juraj.linkes@pantheon.tech>
Diffstat (limited to 'resources/libraries/robot/shared/interfaces.robot')
| -rw-r--r-- | resources/libraries/robot/shared/interfaces.robot | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/resources/libraries/robot/shared/interfaces.robot b/resources/libraries/robot/shared/interfaces.robot index 0c669247d6..b33baaf214 100644 --- a/resources/libraries/robot/shared/interfaces.robot +++ b/resources/libraries/robot/shared/interfaces.robot @@ -137,7 +137,8 @@ | | Run Keyword If | ${index} >= 0 | Return From Keyword | | FOR | ${dut} | IN | @{duts} | | | Stop VPP Service | ${nodes['${dut}']} -| | | PCI Driver Unbind List | ${nodes['${dut}']} | @{${dut}_pf_pci} +| | | Unbind PCI Devices From Other Driver | ${nodes['${dut}']} | vfio-pci | +| | | ... | @{${dut}_pf_pci} | | | Run keyword | ${dut}.Add DPDK Dev | @{${dut}_pf_pci} | | | Run Keyword If | ${dpdk_no_tx_checksum_offload} | | | ... | ${dut}.Add DPDK No Tx Checksum Offload |